Page 87 - JOURNAL OF LIBRARY SCIENCE IN CHINA 2015 Vol. 41

086 Journal of Library Science in China, Vol. 7, 2015

Figure 2. A screenshot of the CLC v4.0 Web version of CLSS.

Copying the class number corresponding to the keywords to the clipboard will help avoid
cataloguers’ input errors and attain classification indexing in a computer cataloging system. Besides,
a computer cataloging system can use Terminology Web Service APIs provided by CLSS directly to
attain automatic indexing. Under the concrete practice of classification indexing, indexing efficiency
can be improved and burdens on cataloguers can be reduced by customizing the data format to the
needs of the system. Storing the information about the corresponding relation between keywords and
class numbers in the database will make classification indexing more convenient in the future.

2.1.3 Automatic number building service
Automatic number building service means that users can build new class numbers in the system
interface. That is, by simulating classifiers and using existing class numbers, it can synthesize
a compound number according to instructions in the schedules, so as to express a specific class
which is not specifically listed in the schedules. It can improve the descriptive power for dealing
with new topics (Chinese Library Classification editorial board of National Library of China,
2012). It is a Gordian knot in developing Web version of classification scheme. In terms of
class numbers’ automatic building, this paper realizes two cases: the subdivision with common
subdivision tables, and the subdivision with specific subdivision tables.
Number building service in this paper can automatically calculate the combined class number